I just dealt with this a couple months ago. My doc wouldn't write me a note to excuse me, because he said, "The whole point is to get you well enough to be able to do things like that." I was tempted to say, "You haven't made it happen for the last six months, why would it be better by the time jury duty comes?" He's such an idiot.
I hope you have a more sympathetic doctor. When I did my jury duty, I ate a bland breakfast (just toast) and brought a big bag of pretzels with me to munch on throughout the day. I never had a problem with needing to go to the bathroom. You may want to speak with the clerk about your needs before going into the courtroom.
BTW, the jury duty experience was so fascinating and educational that I actually wouldn't mind doing it again.
Katie, 30. Chicago 'burbs.
DX: Ulcerative Proctitis (10cm) January '08
Current Treament: Rowasa 60 ML 2X daily, Cortenama 100 ML 1X daily, Bentyl 20 MG (as needed), and multivitamin daily.
Diet/Exercise: No fructose, lactose, sorbitol, mannitol or wheat bran fiber. Daily yoga, walking, or cardio w/weights.
Previous Treatment: Canasa suppositories, Cortifoam, Prednisone, Colazal, Symex DuoTabs, Vitamins.
Status: Flare (showing improvement)